package compile;

/**
 * 自动装箱
 */
public class AutoBoxingDemo {
    public static void main(String[] args) {
        Integer a = 1;
        Integer b = 2;
        Integer c = 3;
        Integer d = 3;
        Integer e = 321;
        Integer f = 321;
        Long g = 3L;

        System.out.println(c == d); // true
        System.out.println(e == f); // false
        System.out.println(c == (a + b)); // true
        System.out.println(c.equals(a + b)); // true
        System.out.println(g == (a + b)); // true
        System.out.println(g.equals(a + b)); // false
    }
}
